Thanks Arne, My temperature control was removing the lid and toothpaste they used for TIM. Haven't hit anything remotely close to excessive temps since.

Depends how far one pushes the system and the cooling used to do so. Plus the workloads, too. If one runs a mix of workloads, you can run out of frequency overhead for multi-threaded or AVX apps before hitting high temps. Correct configuration would keep one beneath that limit - whether it's Vcore or to keep under a given current threshold - while being able to run lighter-load apps at higher frequency.